The response of the honeybee dance to uncertain rewards.
This work focuses on the responses of dancing bees to uncertain rewards. We varied the distribution of a fixed amount of sugar solution among the several flowers of a patch and recorded the foraging and subsequent dance behaviour of single honeybees collecting such a reward at that patch. Concurrently, we aimed to minimize the well-known modulatory effects of sugar reward on both the probability and the strength of a honeybee's dance. It was under these circumstances that we conceived the honeybee dance as an autonomous information-processing system and asked whether or not such a system is sensitive to uncertainty of reward. Our results suggest that bees can tune their dancing according to the distribution of sugar reward among the several flowers of a patch, and that they seemingly do this based on the number - or the frequency - of their non-rewarding inspections to these flowers: the higher the number of non-rewarding inspections the lower the probability of dancing. As a result, a honeybee's dance appears as 'risk-averse', meaning that dances for uncertain resources are less likely. Presumably, the ultimate result of having 'risk-averse' dances is a colony's ability to diminish delayed rewards and the effects of competition with other flower visitors for limited resources. We conclude that a systems approach to the honeybee dance will help to further analyse the regulation of a honeybee's threshold for dancing, and that theoretical accounts of ;risk-sensitive' dances would prove fruitful in broader studies of honeybee foraging, particularly if one were to examine how recruitment actually translates into fitness.
Seefeldt
Sandra
S
Freie Universität Berlin, Fachbereich Biologie/Chemie/Pharmazie, Institut für Biologie-Neurobiologie, Königin-Luise-Strasse 28-30, D-14195 Berlin, Germany.
De Marco
Rodrigo J
RJ
D000819:Animal Communication; D000818:Animals; D001070:Appetitive Behavior; D001516:Bees / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology*; D007858:Learning; D009043:Motor Activity / Q000502:physiology*; D012201:Reward; D012919:Social Behavior; D035501:Uncertainty